That must be a long way we were.A. in whichB. from thatC. from thereD. from where

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A. in which
B. from that
C. from there
(答案→)D. from where
解析：考察宾语从句。Where we were是介词from的宾语.where引导起这个宾语从句。句意：从我们所在的地方到那儿，肯定有很长的距离。